The AirTAC AirTAC SDA20X65 Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 65mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA20X65 is a double-acting, single-rod compact cylinder engineered with a hard-anodized bore and a two-way piston seal. It provides a 157.1 N push and 131.9 N pull at 0.5 MPa, operating at speeds between 30 and 500 mm/s. The riveted body assembly minimizes axial mounting depth, making it ideal for machinery where space is strictly limited.
This 20mm bore unit features an 8mm piston rod and an M5x0.8 air port. It relies on a fixed NBR bumper at each end to decelerate the stroke end, rather than an adjustable air cushion. Because this specific SKU lacks the -S option, it has no piston magnet and cannot support magnetic sensing.
| Model | AirTAC SDA20X65 Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 65 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 90 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×65 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Provides the 157.1 N push stroke needed to eject routed circuit boards from a routing fixture without stressing the 8mm rod.
Uses the 65mm travel to tuck minor flaps on small packaging lines, fitting neatly into tight conveyor side-frames.
Drives a 20mm bore plunger for precise fluid dispensing, where the fixed NBR bumper absorbs the end-stop impact.
For sizing context, stepping down to the SDA16 yields 100.5 N of push at 0.5 MPa, while moving up to the SDA25 provides 245.4 N. The SDA20X65 offers a safe working load of roughly 94 N (about 60% of its 157.1 N capacity) and can vertically lift approximately 8 kg with a 2:1 safety margin. If your process must hold a load without live pressure, note that this cylinder will drift on air loss or valve centring; you will need an external rod lock or pilot-operated check valve. When ordering, confirm the 20mm bore, 65mm stroke, M5x0.8 port, female rod thread, and no magnet.
Quick checklist
At 0.5 MPa, the push force is 157.1 N and the pull force is 131.9 N. At 0.7 MPa, the push is 219.9 N and the pull is 184.7 N. The theoretical maximum push is 32 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU does not include the -S piston magnet, so it cannot trigger AirTAC reed or electronic switches. You would need the -S variant for sensing capabilities.
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